Window lock

ABSTRACT

1,152,088. Bolt fastenings. P. H. PLASTICS Inc. 19 Oct., 1966 [22 Oct., 1965], No. 46696/66. Heading E2A. A bolt assembly for fastening a window pane 11 slidable in a fixed frame, comprising a rail 14 including a flange 15 adapted to extend perpendicularly from the rail, the rail being adapted to be secured to the pane; and a slidable bolt member engaging over the flange for longitudinal sliding motion thereon and capable of co-operating with a portion of the fixed frame, spring means 23 engaging the slidable bolt member to urge said member toward the said portion of the fixed frame, the slidable bolt member having an extended portion adapted to engage into a hole in the fixed frame to fasten the window pane. In the construction shown the flange is provided with a bead 19 and the bolt member has a longitudinal slot 26 which communicates with a cylindrical bore 24, the dimensions of which are such that the bolt member can be snapped over the bead 19 so that the bead will lie within the cylindrical bore 24; the depth of the slot is such that a flat surface 27 of the bolt member lies against the portion of the rail 14 parallel to the surface of the glass pane. The spring means 23 is positioned in the bore 24 in a cut-out in the bead 19 so that one end bears against the bead and the other end bears against a stop member 25 positioned in the cylindrical bore so that the bolt member is biassed towards the fastening position. Two forms of window are described both of them have two panes each provided with a bolt member as described; in the form shown in Fig. 1 the panes are slidable in horizontal tracks and the rail 14 extends vertically and in the other form (not shown) the panes are slidable in vertical tracks and the rail 14 is at the bottom of each pane and extends horizontally; in this form the fixed portion of the window is provided with a plurality of holes 18 so that the panes can be fastened in the closed position and in partly or wholly opened positions.

2 Sheets-Sheet 1 Sept. 5, 1967 R. M. DALLAIRE WINDOW LOCK Filed ooit. 22, 1965 Sept 5 1957 Rl. M. DALLAIRE 3,339,957

WINDOW LOCK Filed Oct. 22, 1965 2 Sheetsheet 2 United States Patent() Filed. Oct. 22, 1965, Ser. No. 501,234 2 Claims. (Cl. 292-145) ABSTRACT O F THE DISCLOSURE A sliding bolt-type lock for windows provided with a plastic side rail having a llange extending perpendicularly to the pane of glass with a sliding member mounted on the flange yand spring loaded to engage openings in the frame of the window dor locking the window in a predetermined position.

The present invention relates to Windows, and in particular to a novel form of lock for both sliding and double-hung windows which lock is extremely simple in structure and reliable in operation. Accordingly it is an object of the present invention to provide-such a lock` for a window and further it is an object of the invention to provide the members which when assembled together form a lock for a window.

In accordance with the present invention, a window lock comprises a member adapted for sliding motion on a ange fixed to a movable pane of a window, and including resilient means urging the member in the direction to lock the window.

Further features and advantages of the invention will readily be apparent from the following description in which:

FIGURE 1 is a perspective view of a slider window constructed in accordance with the present invention,

FIGURE 2 is a perspective view of a double-hung window incorporating the lock in accordance with the present invention,

FIGURE 3 is a top plan view of a sliding lock member in accordance with the present invention,

FIGURE 4 is an end view of the member of FIG- URE 3,

FIGURE 5 is a view from the underneath side of FIGURE 3,

FIGURE 6 is a section along line A-A of FIGURE 3, and

FIGURE 7 is a fragmentary section on the line B-B of FIGURE 6.

Referring to FIGURE l, there is shown a double slider type window 10 having movable panes 11 and 12, sliding in a sill track 13. Each of these panes 11 and 12 is provided with a side rail 14 which in turn has a 'flange 15 formed as an integral part thereof4 as disclosed in my prior United States application, Ser. No. 432,587, filed Feb. 1'5, 1965.

In accordance with the present invention, .and contrary to the teachings of my prior application, each of the side rails 14 is further provided with a locking member 16 which is adapted to slide longitudinally of the liange 15 and is provided with a projecting portion 17 which engages a hole 18 in the sill 13, to lock the window in a closed position. It will be appreciated that the lock of the present invention is extremely simple, rugged, and reliable, and constitutes a less expensive and more positive lock than heretofore provided for windows of this character. The lock member 16, as will be explained in further detail hereafter, is provided with a resilient means whereby the projecting portion 17 is urged into l with the portion 17 window is closed. 15-

.ber of the present invention ICC engagement with the hole 18 when the window is closed so that the window automatically locks when closed.

Briey the locking members 16 are assembled to the anges I5 by cutting a slot in the rbead 19 of the llange 15, 'in which a helical spring (not shown) may be seated,

and the locking member 16 is then snapped over the ilange 15 in such a position that the spring engages an internal stop in the locking member 16 to urge the locking member into the locking position. The locking member 16 may then be slid longitudinally of the liange 15 to unlock the window and will ride on the flange 15 when the window is opened, returning to the extended position engaged in the hole 18 when the Referring to FIGURE 2 there is shown a locking memaixed to a double-hung window to lock panes of the double-hung window in the closed position. As before, the movable lower panes of the double-hung window are provided with a side rail 14 having a ange 15 incorporating a bead 19 on which ange 15, the locking member 16, is adapted to slide. As

I shown in FIGURE 2, the jambs of the window are provided with a jamb track provided with a plurality of holes 18 having anupper sloping cam surface 20, and a lower horizontal surface 21 permitting upward motion of the window pane 12 once the window pane has been moved from the lowest and locked position, and an opening 18 of generally cylindrical shape is provided for engaging the extending portion 17 of the locking member 16 to lock the window firmly shut when closed.

FIGURE 3 is a plan view of the slidable locking member 16 constructed in accordance with teachings of the present invention. It will be noted that the member is provided with an extending portion 17 and a series of ridges 22 which enable a user firmly to grip .the locking member so that it may be moved along the flange of the window. As shown in dotted lines, a spring 23 is positioned within the cylindrical bore 24 internally of the member 16, and rests against a stop 25. The cylindrical bore 24, as shown in FIGURE 4, is connected with the longitudinal slot 26 and is proportioned in relation to the flange 15 of the side rail 14 that the locking member 16 may be snapped over the bead 19 of the flange 15, and the bead 19 will lie within the cylindrical bore 24 in the operative position of the locking member 16. The depth of the slot 26 is so adjusted that the flat surface 27 of the member 16 lies against the portion of the side rail 14 parallel to the plane of the glass in the window. Each of these features may be readily discerned from the several views shown in FIGURES 3, 4, 5, 6 and 7 which more clearly illustrate the structure of the sliding member of the present invention. In particular in FIGURE 4 which is an end view of the sliding member 16, the slot 26 is seen end on and the cylindrical bore 24 with the stop member 25 positioned therein may clearly be seen. Similarly in FIGURE 6l which is a cross section on the line A-A of FIGURE 3, through the stop member 25, there is clearly shown the integral nature of the stop member 25 with the sliding lock member 16.

In FIGURE 5 which is a bottom view of the sliding member 16, the slot 26 is clearly shown and the helical spring 23 can be seen sitting in the cylindrical bore 24 and resting against the stop member 25.

In the use of a window locking member in accordance with the present invention, a slot is cut in the portion 19 of the flange 15 on a side rail 14 which slot extends longitudinally of the ange a distance slightly greater than the length of the helical spring 23, so that the spring may sit in the slot in an uncompressed condition, the slot in the ange 19 being so positioned in relation to the edge of the pane of the window to which the side rail 14 is attached, that the spring 23 is in its uncompressed condition only when the extended portion 17 of the locking member 16 is engaged in the opening 18. Thus in order to remove the extended portion 17 from the opening 18` it is necessary to compress the helical spring 23 against the stop 25. The sliding member 16 is positioned over the ange 15 with the spring resting in the cylindrical bore 24 and is snapped onto the flange 1S so that the bead 19 rests in the cylindrical b0re24 with the spring 23 in the notch provided in the bead 19.

The structure above described in relation to the drawings provides a simple and reliable window locking member consisting in addition to those portions of the window already normally provided, of a sliding member illustrated as reference numeral 16, a helical spring 23 and in the case of a double-hung window a jamb rail incorporating openings 18 and 18'. The sliding member 16 is readily adapted for moulding from a material such as nylon, and will provide a simple and trouble-free lock for a sliding or double-hung window which will give years of reliable service with no maintenance. It must also be emphasized that this lock is very sturdy and will not permit entry through the window when locked, except due to destruction of the window itself, such as for example by breaking the glass.

I claim:

1. In a window having a movable pane of glass provided with a side rail which has a flange extending perpendicularly to said pane of glass, said flange having a bead at its edge remote from said pane, the combination with said flange of a slidable locking member adapted for cooperation with the fixed portions of said window to lock said movable pane, including a slider member having a longitudinal slot terminated in a cylindrical bore, said slider" member being formed of resilient material whereby said slider member may be snapped onto said ange, said slider member being adapted for sliding motion on said ange, a helical spring positioned in said cylindrical bore and urging said slider member intolocking engagement with the xed portions of said window, a portion of said bead being removed for cooperation with said helical spring, said slider member having an extended portion adapted to extend into an opening in the fixed portions of said Window to lock said movable pane in a closed position.

2. The invention as claimed in claim 1 wherein a stop member is positioned in said cylindrical bore against which said helical spring is compressed as said extended portion of said sliding member is drawn out of engagement with the fixed portion of the window.

References Cited UNITED STATES PATENTS 4/1888 -Bachman 292-4 3/196-3 Mendelsohn 292-175 X 

1. IN A WINDOW HAVING A MOVABLE PANE OF GLASS PROVIDED WITH A SIDE RAIL WHICH HAS A FLANGE EXTENDING PERPENDICULARLY TO SAID PANE OF GLASS, SAID FLANGE HAVING A BEAD AT ITS EDGE REMOTE FROM SAID PANE, THE COMBINATION WITH SAID FLANGE OF A SLIDABLE LOCKING MEMBER ADAPTED FOR COOPERATION WITH THE FIXED PORTIONS OF SAID WINDOW TO LOCK SAID MOVABLE PANE, INCLUDING A SLIDER MEMBER HAVING A LONGITUDINAL SLOT TERMINATED IN A CYLINDRICAL BORE, SAID SLIDER MEMBER BEING FORMED OF RESILIENT MATERIAL WHEREBY SAID SLIDER MEMBER MAY BE SNAPPED ONTO SAID FLANGE, SAID SLIDER MEMBER BEING ADAPTED FOR SLIDING MOTION ON SAID FLANGE, A HELICAL SPRING POSITIONED IN SAID CYLINDRICAL BORE AND URGING SAID SLIDER MEMBER INTO LOCKING ENGAGEMENT WITH THE FIXED PORTIONS OF SAID WINDOW, A PORTION OF SAID BEAD BEING REMOVED FOR COOPERATION WITH SAID HELICAL SPRING, SAID SLIDER MEMBER HAVING AN EXTENDED PORTION ADAPTED TO EXTEND INTO AN OPENING IN THE FIXED PORTIONS OF SAID WINDOW TO LOCK SAID MOVABLE PANE IN A CLOSED POSITION. 